| 摘要 |
<p>A flow control valve assembly (10) for timing and regulating fluid flow from a valve inlet (12) to primary (14) and secondary (16) fluid outlets. The valve assembly comprises a regulator valve (20) which, upon initiation of fluid flow to the valve assembly (10), is spring-biased to open the primary (14) and secondary (16) outlets and to modulate the primary outlet flow (14) in a manner maintaining the secondary outlet flow (16) at a predetermined minimum fluid pressure. Upon elapse of a predetermined time interval, a timer assembly (18) responsive to the secondary outlet flow (16) triggers an alteration in the spring bias (64) acting on the regulator valve (20) to permit fluid pressure at the valve inlet (12) to shift the regulator valve to a position closing the secondary outlet (16) and fully opening the primary outlet (14) for the remaining time of a fluid flow cycle. When fluid flow through the valve assembly (10) is halted, a return spring (130) resets the regulator valve (20) to its initial state. In a preferred operating environment, the valve inlet (12) is coupled to the discharge side of a swimming pool circulation pump (24) which draws pool water through a filter unit (26). The primary outlet (14) of the valve assembly (10) is coupled to a return conduit (28) for recycling filtered water to the swimming pool, and the secondary outlet (16) is coupled to a water-powered in-the-pool cleaning device.</p> |
